/**
 * Terminal capabilities detection utilities for CCManager.
 * Determines terminal feature support for optimal UI rendering.
 */
/**
 * Detect if the current terminal supports Unicode characters.
 * This function checks various environment variables and platform indicators
 * to determine if Unicode spinner characters (⠋ ⠙ ⠹ ⠸ ⠼ ⠴ ⠦ ⠧ ⠇ ⠏) will render correctly.
 *
 * Detection strategy:
 * 1. Check TERM environment variable for known Unicode-capable terminals
 * 2. Check LANG and LC_ALL for UTF-8 encoding
 * 3. Platform-specific checks (Windows Terminal, etc.)
 * 4. Fallback to ASCII if no Unicode indicators present
 *
 * @returns true if Unicode is supported, false otherwise
 */
export declare function supportsUnicode(): boolean;